Proposed Enhancement
Flathub submission guidelines: https://github.com/flathub/flathub/wiki/App-Submission
App requirements: https://github.com/flathub/flathub/wiki/App-Requirements
electron-builder does support Flatpak builds according to the docs, but this stale issue suggests there might be some difficulties when building using the electron-builder docker image.
Proposed Enhancement
Flathub submission guidelines: https://github.com/flathub/flathub/wiki/App-Submission
App requirements: https://github.com/flathub/flathub/wiki/App-Requirements
electron-builder does support Flatpak builds according to the docs, but this stale issue suggests there might be some difficulties when building using the electron-builder docker image.